Electric-light-socket cap.



No. 877,326. PATENTED JAN; 21, 1908.

J. H. eoss.

ELECTRIC LIGHT SOCKET GAP.

APPLIOATION FILED MAY 29, 1907.

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UNITED STATES PATENT OFFICE.

JOHN H. GOSS, OF WATERBURY, CONNECTICUT, ASSIGNOR TO SCOVILL MANUFACTURING COMPANY, OF WATERBURY, CONNECTICUT, A CORPORATION OF CONNECTICUT.

Specification of Letters Patent.

Patented Jan. 21 1908.

Application filed May 29 1907 Serial No. 376|402- To all whom it may concern:

Be it known that I, JOHN H. Goss, a citizen of the United States, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented a certain new and useful Im rovement in Electric-Light- -Socket Caps, 0 which the following is a full,

clear, and exact description.

The object of this invention is to provide means for fastening hubs to the caps of electric light sockets in such Way as to avoid the use of- Washers, afford a firmunion between the hub and the cap, prevent the turning of the. hub in the cap, remforce the cap at the pointof union with the hub, and give more room for the knot made by the connecting wires inside the cap, without increasing the otside measurements of the cap.

The invention is embodied in a ca having a double flanged'opening, and a hu having a groove flanked by parallel flanges for oo- .ent invention.

operation with the double flange of the cap, a as now will be particularly described and then finally claimed.

In the accompanying drawings, illustrating the invention, in the several figures of which like parts are similarly designated, Figure 1 is an elevation of an improved form of snap-socket, the cap containing the pres- Fig. 2 is a vertical section of the hub. Fig. 3 is a vertical section of the hub and the adjacent portion of the ca before the two are permanently unite Fig. 4 is'a partial vertical section and elevation of acap and hub permanently united. Fig. 5 is a top plan view of the hub and cap.

The socket 1 may be of any approved construction, and the cap 2 may be also of any approved construction, the socket and cap shown in Fig. 1 being of the snap-fastening variety. v

As shown in-Figs. 3 and 4, the-cap 2 has the opening 3 provided With the horizontal seat 4, a vertical-flange. 5 and a horizontal flange 6, whereby the wall surrounding the opening is practically reinforced or stiflened.

The hub 7 is provided with the setscrewv 8, as usual, but unlike the common hub, the lower edge of the hub is provided with a groove 9 flanked by a short outside w'all10 of about the height of the flange '5', and by a longer inside parallel wall 11 of a length considerably greater than the height of the flange 5 and the thickness of the flange 6 and of such a length as to project well down into the cap through the opening therein.

When the hub is arranged upon the ca as indicated in Fig. 3, its flange 11 is cleno ed or expanded about the flanges 5 and 6 in such way as to slightly overlap the horizontal portion 4 of the cap, in order practically to embed the flanges 5 and 6 within the groove 9 and thereby make a very firm union of the cap and hub. In order to further prevent the turning of the hub Within the o ening 3, the clenched, expanded orupset ange 11 may be punched down at intervals, as indicated at 12. The hub is then screw-threaded and this sc'rewthreading affords an excellent test of the strength of the union.

Since the edge of the o e'ning of the cap is double flanged, it is there y made stiffer and strongerand better able to take care of the strains imposed upon it, than if a single flange or no flange were used, and this strengthening is further augmented by the embedding of the flanges within the hub and by the fact that the outer wall 10 of the hub has both a vertical and horizontal engagement around the flanged opening, and the expanded flange 11 is expanded not only against the cap, but against its. own outer wall 10 as a resisting element.

By the construction shown and described, a very simple, strong and efficient means is provided for uniting hubs to caps and preventing their turning and tearing out.

The invention is not limited to an electric light socket cap, although the invention is so entitled, but it is to be understood that the title is merely selected for a concrete example of an invention that is applicable to a great variety of articles where a relatively stout and solid hub or s ud or nipple is applied to a comparativelyt in sheet metal body portion. 1

What I claim is 1. An electric light socket cap, having an opening surrounded by a double flange, and a hub arranged in said opening and embrac ing the double flange on the outside of the 3. An electric light socket ca, having a double flange, and a hub groove in one end and having said groove flanked on the outside by a relatively short Wall and on the in side by a longer wall, the double flange of the cap being clamped within the groove and between the walls, to effect a rigid union of cap and hub.

4. An electric light socket ca having a double flange, and a hub groove in one end and having said roove flanked on the outside by a relative y short wall and on the inside by' a longerwall, the groove receiving the double flan e of the ca between its own walls and the longer wal ex anded within the ca and about said dou le flan e and 'towar the short wall, to effect a rigi union of the cap and hub and reinforce and strengthen the cap.

erases 5. Anelectrie light socket cap, having an opening therein, a horizontal seat surrounding said opening, a vertical flange rising from the edge of the opening and a horizontal flange at the top of the vertical flange, and a hub having a groove in its lower edge to receive the vertical and horizontal flanges of the cap and flanked by an ,outside wall resting upon the seat and an inside longer wall extending into the opening in the cap and expanded about the flanges and against the seat, to prevent turning and tearing out of the hub.

In testimony whereof I have hereunto set my hand this 27th day of May A. D, 1907.

i JOHN H. GOSS.

Witnesses: i c

' HENRY FEEL,

G. F. HODGES. 

